Re: Environment variable issues running py2app application
Ned Deily <[email protected]>
| Newsgroups | gmane.comp.python.apple |
|---|---|
| Message-ID | <[email protected]> |
In article <CACgdh2jujjuvueKOXpr2e4utJe3ZdYad8OX9JCFFpLhgHbXAKA@mail.gmail.com>, Paul Wiseman <[email protected]> wrote: > I've never seen this problem before but one user seems to be experiencing > this issue and I'm at a bit of a loss as to what the cause could be > > One part of the app runs this: subprocess.Popen(['/usr/bin/env', > 'system_profiler', 'SPUSBDataType', '-xml']) > > I've never seen a problem running this, however in one users logs it's > returning: env: system_profiler: No such file or directory > > So I thought that maybe their PATH variable doesn't include path to the > binary, I asked them to provide the output of '/usr/bin/env' and 'which > system_profiler' > > 'which system profiler' returned '/usr/sbin/system_profiler' and > '/usr/sbin' was in their PATH variable that returned from /usr/bin/env, so > I don't really get what's going on. > > This also looks like it only happens if the user opens the .app directly, > but if they open the binary directly in the .app/Contents/MacOS/ folder, it > works and it can find these external binaries through subprocess. > > I'm really not sure what might be causing this? and I've never experienced > it myself when testing, nor has it ever been reported before which makes me > inclined to believe it's some external setting / config on the users > machine which is causing this behaviour? Normally, a shell (like bash) is not involved in launching an OS X app bundle, like those produced by py2app, so the environment variables seen in an app's environment are not the same as what is seen from a terminal shell session. Thus, the output of `which` and of the user's shell $PATH aren't relevant. It used to be possible to influence to the user's GUI environment by supplying a ~/.MacOSX/environment.plist but I believe that is no longer supported on current OS X releases and, in any case, it's a bad idea to depend on it. It is possible to include app-specific environment variables in the app's plist. But, in your case, the simplest thing to do is use an absolute path to `system_profiler` and avoid use of `/usr/bin/env` within an app bundle. -- Ned Deily, [email protected] _______________________________________________ Pythonmac-SIG maillist - [email protected] http://mail.python.org/mailman/listinfo/pythonmac-sig unsubscribe: http://mail.python.org/mailman/options/Pythonmac-SIG